Durable: 1020 steel, solid construction, Zinc-plated to prevent rust Best Sellers: Best Mechanical V-Belt Pulleys V-belt Pulley AB600-5/8 Single Groove Web Sheaves,v Belt Pulley 6 Zinc Plated Rust Resistant The pulley is formed through Welding Forming, using material that meets the American standard ASTM 1020, resulting in a product that is sturdy and durable. Pulley outside diameter:6 inch,1 Groove Standard V-Belt Pulley: For V-Belt Section A,B,5L,4L,AX,BX Browning 2H3V56 Split Taper Sheave, Cast Iron, 2 Groove, 3V Belt, Uses Inside are two... Standard V-Belt Pulley: For V-Belt Section A,B,5L,4L,AX,BX Saelno AB400-1 Single Groove Web Sheaves,v Belt Pulley 4" OD 1 inch bore,Motor Pulley Carbon Steel for A B 5L 4L V-Belts · #30 Pulley outside diameter:6 inch,1 Groove